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Individual Calculations June 2023 |
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| Kaumina, M Yashika Total change: -16.80 | |   |
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| Supr Knights Open International Rating Chess Championship 2023 | Colombo | SRI | 2023-04-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1257 | 1295 | 3.00 | 6 | -0.38 | 20 | -7.60 | |
|  Nanayakkara, Kesara | | | 1101 | SRI | 1.00 | 1 | 0.25 | 20 | 5.00 | |  Gamage, Ovin Vidmal | | | 1528 | SRI | 0.00 | 1 | -0.21 | 20 | -4.20 | | | Bandara, K G J C | | | 1116 | SRI | 1.00 | 1 | 0.27 | 20 | 5.40 | | | Lamahewa, S | | | 1702 | SRI | 0.00 | 1 | -0.08 | 20 | -1.60 | | | Arachchi, B A M | | | 1075 | SRI | 0.00 | 1 | -0.78 | 20 | -15.60 | | | Withanage, Mahiru Mihimeth | | | 1020 | SRI | 1.00 | 1 | 0.17 | 20 | 3.40 | |
Rc - average rating of rated opponents, Ro - rating of a player in a tournament, Rp - rating performance of an unrated player, W - points won in a tournament against rated opponents, N - total number of games against rated opponents, Change - change used for calculation according to formula, K - development coefficient, Kchg - rating change of a player calculated as (K * change) | | | | 5th SSC Open International Rating Chess Championship 2023 | Matara | SRI | 2023-04-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1184 | 1295 | 2.00 | 5 | -1.23 | 20 | -24.60 | |
| | Kanchana, W A | | | 1130 | SRI | 0.50 | 1 | -0.22 | 20 | -4.40 | | | Newansa, M Esandi | | | 1581 | SRI | 0.00 | 1 | -0.16 | 20 | -3.20 | | | Welikumbura, D M | | | 1068 | SRI | 0.00 | 1 | -0.79 | 20 | -15.80 | | | Thilakaratna, B A Thevindu Kenula | | | 1120 | SRI | 0.50 | 1 | -0.23 | 20 | -4.60 | | | Samarakoon, Sasndu Ayod | | | 1021 | SRI | 1.00 | 1 | 0.17 | 20 | 3.40 | |
Rc - average rating of rated opponents, Ro - rating of a player in a tournament, Rp - rating performance of an unrated player, W - points won in a tournament against rated opponents, N - total number of games against rated opponents, Change - change used for calculation according to formula, K - development coefficient, Kchg - rating change of a player calculated as (K * change) | | | | Colombo International Chess Festival 2023 | Colombo | SRI | 2023-05-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1414 | 1295 | 3.00 | 5 | 1.25 | 20 | 25.00 | |
| | Wickramathanthri, Dinuga | | | 1075 | SRI | 1.00 | 1 | 0.22 | 20 | 4.40 | | | Amarathunga, Kosala Sandeepa Cham | | | 1472 | SRI | 0.50 | 1 | 0.23 | 20 | 4.60 | | | Rathnayake, R M Dulinma Hemalni | | | 1439 | SRI | 1.00 | 1 | 0.69 | 20 | 13.80 | | | Perera, G Thinuka Geethula | | | 1549 | SRI | 0.50 | 1 | 0.31 | 20 | 6.20 | | | Newansa, M Esandi | | | 1537 | SRI | 0.00 | 1 | -0.20 | 20 | -4.00 | |
Rc - average rating of rated opponents, Ro - rating of a player in a tournament, Rp - rating performance of an unrated player, W - points won in a tournament against rated opponents, N - total number of games against rated opponents, Change - change used for calculation according to formula, K - development coefficient, Kchg - rating change of a player calculated as (K * change) | | | | 1st Rahulians International Chess Festival 2023 | Matara | SRI | 2023-05-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1100 | 1295 | 2.50 | 4 | -0.48 | 20 | -9.60 | |
| | De Silva, H Esandi Sihansa | | | 1010 | SRI | 0.50 | 1 | -0.34 | 20 | -6.80 | | | Samarakoon, Sasndu Ayod | | | 1081 | SRI | 1.00 | 1 | 0.23 | 20 | 4.60 | | | Perera, B Yenuthi Sahanlee | | | 1112 | SRI | 0.00 | 1 | -0.74 | 20 | -14.80 | | | Samaraweera, S M Sethika Hansira | | | 1198 | SRI | 1.00 | 1 | 0.37 | 20 | 7.40 | |
Rc - average rating of rated opponents, Ro - rating of a player in a tournament, Rp - rating performance of an unrated player, W - points won in a tournament against rated opponents, N - total number of games against rated opponents, Change - change used for calculation according to formula, K - development coefficient, Kchg - rating change of a player calculated as (K * change) | | |
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